[api] Expose FunctionCallbackInfo::NewTarget

include/v8.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /** \mainpage V8 API Reference Guide
  *
  * V8 is Google's open source JavaScript engine.
  *
  * This set of documents provides reference material generated from the
  * V8 header file, include/v8.h.
@@ skipping 3174 matching lines @@
  */
 template<typename T>
 class FunctionCallbackInfo {
  public:
   V8_INLINE int Length() const;
   V8_INLINE Local<Value> operator[](int i) const;
   V8_INLINE V8_DEPRECATED("Use Data() to explicitly pass Callee instead",
                           Local<Function> Callee() const);
   V8_INLINE Local<Object> This() const;
   V8_INLINE Local<Object> Holder() const;
+  V8_INLINE Local<Value> NewTarget() const;
   V8_INLINE bool IsConstructCall() const;
   V8_INLINE Local<Value> Data() const;
   V8_INLINE Isolate* GetIsolate() const;
   V8_INLINE ReturnValue<T> GetReturnValue() const;
   // This shouldn't be public, but the arm compiler needs it.
-  static const int kArgsLength = 7;
+  static const int kArgsLength = 8;
 
  protected:
   friend class internal::FunctionCallbackArguments;
   friend class internal::CustomArguments<FunctionCallbackInfo>;
   static const int kHolderIndex = 0;
   static const int kIsolateIndex = 1;
   static const int kReturnValueDefaultValueIndex = 2;
   static const int kReturnValueIndex = 3;
   static const int kDataIndex = 4;
   static const int kCalleeIndex = 5;
   static const int kContextSaveIndex = 6;
+  static const int kNewTargetIndex = 7;
 
   V8_INLINE FunctionCallbackInfo(internal::Object** implicit_args,
-                   internal::Object** values,
-                   int length,
-                   bool is_construct_call);
+                                 internal::Object** values, int length);
   internal::Object** implicit_args_;
   internal::Object** values_;
   int length_;
-  int is_construct_call_;
 };
 
 
 /**
  * The information passed to a property callback about the context
  * of the property access.
  */
 template<typename T>
 class PropertyCallbackInfo {
  public:
@@ skipping 4627 matching lines @@
   // Uncompilable to prevent inadvertent misuse.
   TYPE_CHECK(S*, Primitive);
 }
 
 template<typename T>
 internal::Object* ReturnValue<T>::GetDefaultValue() {
   // Default value is always the pointer below value_ on the stack.
   return value_[-1];
 }
 
-
-template<typename T>
+template <typename T>
 FunctionCallbackInfo<T>::FunctionCallbackInfo(internal::Object** implicit_args,
                                               internal::Object** values,
-                                              int length,
-                                              bool is_construct_call)
-    : implicit_args_(implicit_args),
-      values_(values),
-      length_(length),
-      is_construct_call_(is_construct_call) { }
-
+                                              int length)
+    : implicit_args_(implicit_args), values_(values), length_(length) {}
 
 template<typename T>
 Local<Value> FunctionCallbackInfo<T>::operator[](int i) const {
   if (i < 0 || length_ <= i) return Local<Value>(*Undefined(GetIsolate()));
   return Local<Value>(reinterpret_cast<Value*>(values_ - i));
 }
 
 
 template<typename T>
 Local<Function> FunctionCallbackInfo<T>::Callee() const {
   return Local<Function>(reinterpret_cast<Function*>(
       &implicit_args_[kCalleeIndex]));
 }
 
 
 template<typename T>
 Local<Object> FunctionCallbackInfo<T>::This() const {
   return Local<Object>(reinterpret_cast<Object*>(values_ + 1));
 }
 
 
 template<typename T>
 Local<Object> FunctionCallbackInfo<T>::Holder() const {
   return Local<Object>(reinterpret_cast<Object*>(
       &implicit_args_[kHolderIndex]));
 }
 
+template <typename T>
+Local<Value> FunctionCallbackInfo<T>::NewTarget() const {
+  return Local<Value>(
+      reinterpret_cast<Value*>(&implicit_args_[kNewTargetIndex]));
+}
 
-template<typename T>
+template <typename T>
 Local<Value> FunctionCallbackInfo<T>::Data() const {
   return Local<Value>(reinterpret_cast<Value*>(&implicit_args_[kDataIndex]));
 }
 
 
 template<typename T>
 Isolate* FunctionCallbackInfo<T>::GetIsolate() const {
   return *reinterpret_cast<Isolate**>(&implicit_args_[kIsolateIndex]);
 }
 
 
 template<typename T>
 ReturnValue<T> FunctionCallbackInfo<T>::GetReturnValue() const {
   return ReturnValue<T>(&implicit_args_[kReturnValueIndex]);
 }
 
 
 template<typename T>
 bool FunctionCallbackInfo<T>::IsConstructCall() const {
-  return is_construct_call_ & 0x1;
+  return !NewTarget()->IsUndefined();
 }
 
 
 template<typename T>
 int FunctionCallbackInfo<T>::Length() const {
   return length_;
 }
 
 ScriptOrigin::ScriptOrigin(Local<Value> resource_name,
                            Local<Integer> resource_line_offset,
@@ skipping 833 matching lines @@
  */
 
 
 }  // namespace v8
 
 
 #undef TYPE_CHECK
 
 
 #endif  // INCLUDE_V8_H_